49 CFR 192.115 - Temperature derating factor (
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Title 49: Transportation
Subtitle B: Other Regulations Relating to Transportation (Continued)
CHAPTER I: PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED)
SUBCHAPTER D: PIPELINE SAFETY
PART 192: TRANSPORTATION OF NATURAL AND OTHER GAS BY PIPELINE: MINIMUM FEDERAL SAFETY STANDARDS
Subpart C: Pipe Design
192.115 - Temperature derating factor (T) for steel pipe.
The temperature derating factor to be used in the design formula in ? 192.105 is determined as follows:
| Gas temperature in degrees Fahrenheit (Celsius) | Temperature derating factor (T) |
| 250 ?F (121 ?C) or less | 1.000 |
| 300 ?F (149 ?C) | 0.967 |
| 350 ?F (177 ?C) | 0.933 |
| 400 ?F (204 ?C) | 0.900 |
| 450 ?F (232 ?C) | 0.867 |
For intermediate gas temperatures, the derating factor is determined by interpolation.
[35 FR 13257, Aug. 19, 1970, as amended by Amdt. 192-85, 63 FR 37502, July 13, 1998]
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